Still



June 23, 1925; M. F. DE BAJLIGETHY STILL DI STILLING APPARATUS Flled July 5 1924 Original Filed July 5, 1924 Patented June 23, 1925.

UNITED STATES MAX I. DE IBAJLIGETHY, OF HOUSTON, TEXAS.

STILL.

Application filed July 5, 1924. Serial No. 724,324.

To all whom it may concern:

Be it known that 1, MAX F. DE BAJLIGE- THY, a citizen of the United States, residing at Houston, in the county of Harris and State of Texas, have invented certain new and useful Improvements in a Still, of which the following is a specification.

This invention relates to new and useful improvements in a still.

One object of the invention is to provide a still of the character described whichhas been specially designed for use in the distillation of hydrocarbon, whereby the elements of high gravity may be separated from the lighter elements, and by the use of which the risks of explosions, during the distilling process, will be greatly lessened.

Another object of the invention is to pro vide a still of the character described including a drum wholly located within the boiler through which the hydrocarbon passes, in the process of distillation, before it enters the boiler, said drum being provided for the purpose of relieving the boiler of an excessive amount of pressure, and for the further purpose of collecting sediments and other heavy elements to prevent their being deposited on the bottom of the boiler and there forming a thick heat retaining coating which would soon cause the bottom of the boiler to become burned out.

A further feature of the invention resides in the provision of an inlet line through which the hydrocarbon is delivered into the boiler drum, said line being formed into a heating coil in the furnace, and said coil being formed double, that is, of an inside conducting pipe and an outside or circulating pipe, which is spaced from the inside pipe, and through which a medium, such as fused metal, is circulated to keep the outside pipe from becoming too hot, said outside pipe forming a conductor also, through which the hyrocarbon in the heater coil may be conducted outside of the furnace in case the inner coil should burst, thus preventing the discharge of the oil into the furnace in case of bursting of the inner coil and avoiding an explosion.

With the above and other objects in view, the invention has particular relation to certain novel features of construction, operation and arrangement of parts, an example of which is given in this specification and illustrated in the accompanying drawings, wherein 1,542,864 PATENT OFFICE.

The figure shows a vertical sectional view of the still.

In the drawing the numeral 1 designates the boiler under which there is the furnace 2. The boiler is filled with the hydrocarbon through the inlet line 3, which is connected w1th a pump 4 by means of which the hydrocarbon in the boiler and line 3 is kept under pressure. The line 3 is formed into an inner coil 5 in the furnace and is controlled by the back pressure valve 6. It enters the boiler 1, near the top, and is downwardly turned and enters one end of the drum 7 which is located entirely within the boiler. Leading from the other end of said drum there is an outlet pipe 8 which is downwardly turned and formed with a discharge nozzle 9, controlled by the gate valve 10.

The drum 7 will ordinarily be submerged in the fluid in the boiler. The sediments and heavy elements will settle to the bottom of the drum, thus preventing their collection on the bottom of the boiler.' The bottom of the boiler, being thus kept clean, will not burn out and permit the discharge of its contents into the furnace which would cause an explosion. The drum 7 also relieves the boiler of part of the pressure to which the hydrocarbon is subjected by the pump 4. The lighter elements given off in the cracking process pass through the line 11, leading from the top of the boiler to the usual condenser 12. The heavy oil is drained from the boiler through the outlet pipe 13, which is controlled by a suitable valve 14. At intervals the drum 7 may be cleaned out by removing one end thereof, for that purpose.

It often happens that the coil 5 bursts, on account of the pressure within it and the oil in said coil, in such event is drained into the furnace causing an explosion. To prevent this the surrounding housing 15 has been provided. This housing consists of an enlarged tube which surrounds the coil -5, in the furnace, and is spaced therefrom. The pipe 3, of which the coil 5 is formed, is fitted through the glands 16, 16, on opposite sides of the furnace, which close the ends of said housing. The upper turn of the housing coil carries a container 17, and a fused metal is poured into said container and fills the housing 15, and is kept in circulation by means of a pump '18 which is connected into a circulating line 19, which is Russuw connected at one end into the bottom turn of the housing coil, and at its other end into the container 17. This fused metal 1s thus kept in circulation about the coil 5 within the housing 15, and its chief purpose is to keep said housing from becoming too hot, and burning out .and at the same time to permit the proper heating of the 0011 5. The fused metal may be composed of lead and bismuth of a combination of other metals having a low melting oint and a boiling point not lower than a out 700 degrees F.

In case the pressure in the coil 5 should cause the same to burst, the hydrocarbon will be retained in the housing 15 and will be forced up into the container 17, :through the fused metal and will pass out through the relief line 20, which is controlled by the relief valve 21, and conducted a sufficient distance from the still to prevent an explosion thereof.

The line 20 is provided with a trap 22in which the fused metal carried by thev discharging hydrocarbon will collect and it will drain back into the container 17 through the drain pipe 23.

Instead ofthe fused metal any other liquid bath for the coil 5 may be used which may be found to be practical.

What I claim is:

1. A still including a boiler, an inlet line entering the boiler and formed into an enlarged reaction drum within the boiler, and formed into a heating coil outside of the boiler, a housing enclosing the turns of said coil and spaced therefrom forming a fluid circulating chamber about the turns of the heater coil, means for circulating a fluid through said chamber, and an outlet line leading from said chamber, and formed with a trap.

2. A still including a boiler, an inlet line entering said boiler, a furnace, said inlet line passing through said furnace, a housing surrounding the line within the furnace and forming a circulating chamber therearound,

means for circulating a fluid through said chamber, and an outlet line formed with 'a trap, leading out from said chamber.

3. A still including a boiler, an inlet line entering said boiler, a furnace, said inlet line passing through said furnace, a housing surroundingthe line within the furnace and forming a circulating chamber therearound, means for circulating a fluid through said chamber, and an outlet line leading from said chamber, and formed with a trap.

4. In a still an inlet line for the boiler, a housin around said line outside of the boiler forming a circulating chamber around the line, means for circulating a fluid through said chamber, and a relief line leading from said chamber, a trap associated with the outlet line.

5. A still including a boiler, an inlet line MAX F. DE BAJLIGETHY. Witnesses:

WM. A. CATEE'Y, JOHN WM. PALMER. 

